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Figure 1
Orvieto districts. Source: Carpentier 1986. Orvieto at the end of the 13th century, its four districts, places of interest and mendicant churches
Figure 2
Orvieto Sphere of Influence. Source: Waley 1952. Dotted area maps Orvieto and its contado in 1313, the diagonal lines identify Maremma region, cities underlined where claimed by Orvieto and the Pope